CN101945146A - Terminal and audio signal output method - Google Patents
Terminal and audio signal output method Download PDFInfo
- Publication number
- CN101945146A CN101945146A CN 201010286267 CN201010286267A CN101945146A CN 101945146 A CN101945146 A CN 101945146A CN 201010286267 CN201010286267 CN 201010286267 CN 201010286267 A CN201010286267 A CN 201010286267A CN 101945146 A CN101945146 A CN 101945146A
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- signal
- module
- receiver signal
- receiver
- power amplifier
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
- H04M1/6041—Portable telephones adapted for handsfree use
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
- H04R2201/028—Structural combinations of loudspeakers with built-in power amplifiers, e.g. in the same acoustic enclosure
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Stereophonic System (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The embodiment of the invention discloses a terminal and an audio signal output method, which relate to the technical field of signal processing and are designed for saving the cost of a two-in-one scheme of a loudspeaker and a receiver. The terminal of the embodiment comprises a loudspeaker signal channel which is used for forming receiver signals and outputting the receiver signals and comprises a power amplification module. The embodiment of the invention also provides the audio signal output method which comprises the following steps of: forming the receiver signals; and outputting the receiver signals by the loudspeaker signal channel, wherein the loudspeaker signal channel comprises the power amplification module. The embodiment of the invention is used for outputting audio signals.
Description
Technical field
The present invention relates to the signal processing technology field, relate in particular to a kind of terminal and audio frequency signal output.
Background technology
At present, existence is carried out two-in-one scheme with loud speaker and receiver in the application of terminal platform.Loud speaker and receiver carry out one of two-in-one concrete implementation method, are the big electric capacity of series connection between receiver signalling channel and audio frequency output module (for example, compound loudspeaker and receiver).Described receiver signalling channel is that baseband signal is converted into the receiver signal and exports the receiver signal in the audio frequency output module process needed device and circuit, for example baseband signal is converted into the signal processing module of receiver signal.Receiver signalling channel and loudspeaker signal passage are isolated by big electric capacity, influence each other with the DC level of avoiding receiver signal and loudspeaker signal, but the cost that meeting raising product is set of electric capacity, and electric capacity can influence reception tonequality.
Loud speaker and receiver carry out two of two-in-one concrete implementation method, be that receiver signalling channel and loudspeaker signal passage are isolated by switch, realize the switching of receiver signal and loudspeaker signal by turning on and off of control switch, but this kind switch the cost that can improve product equally is set.
At above-mentioned problems of the prior art, be necessary to provide a kind of loud speaker with low cost and the two-in-one scheme of receiver.
Summary of the invention
Embodiments of the invention provide a kind of terminal and audio frequency signal output, can save the cost of loud speaker and the two-in-one scheme of receiver.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of terminal comprises: the loudspeaker signal passage, be used to form the receiver signal, and with described receiver signal output; Wherein, described loudspeaker signal passage comprises power amplifier module.
Embodiments of the invention also provide a kind of audio frequency signal output, comprising:
Form the receiver signal;
Described loudspeaker signal passage is exported described receiver signal; Wherein, described loudspeaker signal passage comprises power amplifier module.
Terminal that the embodiment of the invention provides and audio frequency signal output, the receiver signal utilizes the loudspeaker signal passage to form and output, do not need extra the introducing to carry out the peripheral components that receiver signal and loudspeaker signal switch, the design and the manufacturing cost of having saved product greatly.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, to do to introduce simply to the accompanying drawing of required use among the embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the embodiment of the invention one a terminal module schematic diagram;
Fig. 2 is the concrete schematic diagram of the embodiment of the invention one terminal module;
Fig. 3 is the application signal of module in existing terminal platform of the embodiment of the invention one described terminal;
Fig. 4 is the schematic flow sheet of the embodiment of the invention two audio frequency signal outputs;
Fig. 5 is the more specifically schematic flow sheet of the embodiment of the invention two audio frequency signal outputs.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment one
Referring to Fig. 1, a kind of terminal 1 comprises: loudspeaker signal passage 2, be used to form the receiver signal, and with described receiver signal output; Wherein, described loudspeaker signal passage 2 comprises power amplifier module 3.
Loudspeaker signal is based on different application demands with the receiver signal, have signal amplitude and other audio signal of DC component equal difference to what baseband signal was handled formation, described receiver signal is compared with described loudspeaker signal has lower signal amplitude.Described terminal is switched the output of receiver signal and loudspeaker signal according to application demand.
The loudspeaker signal passage is meant in the terminal and converts baseband signal to loudspeaker signal in the prior art, and export loudspeaker signal to path that the device of loudspeaker signal process in the audio frequency output module process and circuit constitute, comprise loudspeaker signal processing module (be used for handle form described loudspeaker signal to baseband signal), power amplifier module and feedback circuit etc.
The embodiment of the invention forms the receiver signal and output by the loudspeaker signal passage, and a shared output channel does not need additionally to be provided with device, has saved the design and the manufacturing cost of product greatly.Simultaneously, do not need extra the introducing to carry out the peripheral components that receiver signal and loudspeaker signal switch, avoided, for example component failure or cause sound quality deterioration because of introducing the problem that peripheral components brings.
Further, referring to Fig. 2, loudspeaker signal passage 2 also comprises receiver signal processing module 4 described in the described terminal 1 of present embodiment, and described terminal 1 also comprises audio frequency output module 5; Wherein, described receiver signal processing module 4 is used for baseband signal is handled the gain parameter that forms described receiver signal and determine described receiver signal; Described power amplifier module 3 is used for adjusting described receiver signal according to described gain parameter, will be through the receiver signal output of adjusting; Described audio frequency output module 5 is used to receive the receiver signal of adjusting through described power amplifier module, and the receiver signal of the described power amplifier module adjustment of described process is exported.
The described receiver signal processing module 4 of present embodiment is used for that baseband signal is eliminated background noise, adjustment audio etc. and handles formation receiver signal, and the gain parameter of definite receiver signal, the related gain of described receiver signal preestablishes when being arranged on described Terminal Design.The gain parameter of determining the receiver signal be in order to ensure the receiver signal by behind the power amplifier module, can keep the signal amplitude of receiver signal and distortion in standard compliant scope.Described audio signal output module is compound loudspeaker and receiver device.
Further, the described terminal of present embodiment, described loudspeaker signal passage also comprises: the loudspeaker signal processing module is used for baseband signal is handled the described loudspeaker signal of formation; Wherein, the multiplexing same signal processing module of described receiver signal processing module and loudspeaker signal processing module.
Loudspeaker signal processing module and receiver signal processing module carry out different disposal to baseband signal, form receiver signal and loudspeaker signal respectively, the signal amplitude of described receiver signal is less than described loudspeaker signal, described receiver signal processing module and described loudspeaker signal processing module can embody its software product with the form of software product and can be arranged in the same hardware module, also can be located in the different hardware modules.
Further, referring to Fig. 2, the described terminal 1 of present embodiment is provided with the end debugging module 6 of making an uproar at described loudspeaker signal passage 2 and 5 of described audio frequency output modules; Wherein, the debugging module 6 of making an uproar is used to adjust the noise of receiver signal at the described end.
Receiver signal for power amplifier module output may produce the noise that does not meet standard code or influence tonequality through in the process of power amplifier, the end debugging module of making an uproar is set between loudspeaker channel and audio frequency output module, before the final output of audio frequency, reduce the noise of receiver signal, further guarantee tonequality.
Further, the debugging module of making an uproar is a resistive module at the described end of the described terminal of present embodiment.
When the receiver signal noise of exporting through power amplifier module is bigger than normal, increase resistance value.
Further, the described power amplifier module of the described terminal of present embodiment is the digital power amplifier module.
Because being used for the transistor of signal amplification, digital power amplifier (being D class power amplifier) promptly directly its load is connected with charger once opening, current flowing but transistor no-voltage, therefore inactivity consumption, so D class power amplification efficiency height can improve the efficient of audio frequency output module.Certainly the present invention does not limit the power amplifier module which kind of type power amplifier module adopts, and class AB power amplifier module, Class B power amplifier module and class a audio power amplifier are all in protection scope of the present invention.
Especially, in existing terminal platform, described receiver signal processing module and loudspeaker signal processing module realize relatively independent at software code and hardware.Present embodiment can call the software code of existing receiver signal processing module, the software code of described receiver signal processing module is carried out related coding with the software code of loudspeaker signal processing module, receiver signal processing module and loudspeaker signal processing module are realized by same hardware.Referring to Fig. 3, be the application note of the embodiment of the invention based on existing terminal platform.Baseband module 7 is the baseband chip based on existing platform, the audio processing modules 8 Central Plains receiver signal processing modules 41 of described baseband chip are the receiver signal output port of platform acquiescence, receiver signal from described former receiver signal processing module 41 outputs in the prior art is connected directly to audio frequency output module 5, and present embodiment is abandoned described platform acquiescence receiver signal output port.The described receiver signal processing module 43 of the embodiment of the invention is set in the audio processing modules of described baseband module, be used for baseband signal is eliminated background noise, adjusted the gain parameter that obtains receiver signal and definite described receiver signal after processing such as audio, described receiver signal is inputed to power amplifier module 3.The same hardware output port of described receiver signal processing module and loudspeaker signal processing module shared baseband module 7, this output port is according to handoff request output receiver signal or loudspeaker signal, resistance 6 is used to debug noise, and audio frequency output module 5 is according to the audio signal output sound that transmits.
Certainly the audio output device protection range of present embodiment is not limited to the application enhancements to existing terminal platform Central Plains receiver signal processing module, and the application of all loudspeaker signals and receiver signal common signalling channel is all in protection scope of the present invention.
The described terminal of the embodiment of the invention can be the apparatus such as computer of mobile phone and other band phonetic functions.
Embodiment two
Referring to Fig. 4, the embodiment of the invention also provides a kind of audio frequency signal output, comprising:
Step 1, formation receiver signal.
Loudspeaker signal is based on different application demands with the receiver signal, have signal amplitude and other audio signal of DC component equal difference to what baseband signal was handled formation, described receiver signal is compared with described loudspeaker signal has lower signal amplitude.Described loudspeaker signal passage is meant in the terminal and converts baseband signal to loudspeaker signal, and export loudspeaker signal to path that the device of loudspeaker signal process in the audio frequency output module process and circuit constitute, comprise loudspeaker signal processing module (be used for handle form described loudspeaker signal to baseband signal), power amplifier module and feedback circuit etc.The terminal of carrying out audio signal output is switched the output of receiver signal and loudspeaker signal according to application demand.
The embodiment of the invention forms the receiver signal and output by the loudspeaker signal passage, and a shared output channel does not need additionally to be provided with device, has saved the design and the manufacturing cost of product greatly.Simultaneously, do not need extra the introducing to carry out the peripheral components that receiver signal and loudspeaker signal switch, avoided, for example component failure or cause sound quality deterioration because of introducing the problem that peripheral components brings.
Further, the inventive method embodiment comprises the steps that specifically referring to Fig. 5, the described formation receiver of step signal is specially:
Present embodiment is eliminated background noise, adjustment audio etc. to baseband signal and is handled formation receiver signal, and the gain parameter of definite receiver signal, the related gain of described receiver signal preestablishes when being arranged on described Terminal Design of carrying out audio frequency output.The gain parameter of determining the receiver signal be in order to ensure the receiver signal by behind the power amplifier module, can keep the signal amplitude of receiver signal and distortion in standard compliant scope.
Especially, in existing terminal platform, handle formation receiver signal and base band handled the formation loudspeaker signal relatively independent in software code and hardware realization to baseband signal.Present embodiment can call existing software code to the receiver signal processing, to carry out related coding to the software code that the software code of receiver signal processing and loudspeaker signal are handled, and make base band handled to form loudspeaker signal and in same software module, realize with formation receiver signal.
The described loudspeaker signal passage of described step 2 is exported described receiver signal, specifically comprises the steps:
Described audio signal output module is compound loudspeaker and receiver device.
The embodiment of the invention is by handling before entering power amplifier module and definite gain parameter the receiver signal, guarantee still can to keep after the receiver signal is by power amplifier module the signal amplitude of receiver signal and distortion in standard compliant scope, make the receiver signal undertaken to guarantee tonequality after the conversion of the signal of telecommunication and audio signal by the audio frequency output module.
More further, will export the audio frequency output module to through the receiver signal of described power amplifier module adjustment in embodiment step 23, comprising:
To make an uproar the end of by through the receiver signal of described power amplifier module adjustment and export the audio frequency output module to after the debugging.
Receiver signal for power amplifier module output may produce the noise that does not meet standard code or influence tonequality through in the process of power amplifier, the end debugging module of making an uproar is set between loudspeaker signal passage and audio frequency output module, before audio frequency output, reduce the noise of receiver signal, further guarantee tonequality.
Particularly, make an uproar to debug and undertaken by between described loudspeaker signal passage and described audio frequency output module resistance being set in the described end of present embodiment.
When the receiver signal noise of exporting through power amplifier module is bigger than normal, increase resistance value.
Further, the described power amplifier module of present embodiment is the digital power amplifier module.
Digital power amplifier (D class power amplifier) module efficiency height can improve the efficient of audio output device.Certainly the present invention does not limit the power amplifier module which kind of type power amplifier module adopts, and class AB power amplifier module, Class B power amplifier module and class a audio power amplifier are all in protection scope of the present invention.
The embodiment of the invention is shared with loudspeaker signal passage and receiver signalling channel, can avoid can avoiding the failure risk of this switching device simultaneously because of introducing the cost rising problem that the signal switching device brings.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, and this software product can be distributed in and carry out the above-mentioned method of each embodiment of the present invention in the hardware module.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (11)
1. a terminal is characterized in that, comprising: the loudspeaker signal passage, be used to form the receiver signal, and with described receiver signal output; Wherein, described loudspeaker signal passage comprises power amplifier module.
2. according to the described terminal of claim 1, it is characterized in that described loudspeaker signal passage also comprises the receiver signal processing module, described terminal also comprises the audio frequency output module; Wherein,
Described receiver signal processing module is used for baseband signal is handled the gain parameter that forms described receiver signal and determine described receiver signal;
Described power amplifier module is used for adjusting described receiver signal according to described gain parameter, will be through the receiver signal output of adjusting;
Described audio frequency output module is used to receive the receiver signal of adjusting through described power amplifier module, and the receiver signal of the described power amplifier module adjustment of described process is exported.
3. according to the described terminal of claim 2, it is characterized in that described loudspeaker signal passage also comprises:
The loudspeaker signal processing module is used for baseband signal is handled the described loudspeaker signal of formation; Wherein,
The multiplexing same signal processing module of described receiver signal processing module and loudspeaker signal processing module.
4. according to the described terminal of claim 2, it is characterized in that: the end debugging module of making an uproar is set between described loudspeaker signal passage and described audio frequency output module; Wherein, make an uproar in the end that debugging module is used to adjust the receiver signal of the making an uproar described end.
5. according to the described terminal of claim 4, it is characterized in that: the debugging module of making an uproar of the described end is a resistive module.
6. according to the described terminal of claim 1, it is characterized in that: described power amplifier module is the digital power amplifier module.
7. an audio frequency signal output is characterized in that, comprising:
Form the receiver signal;
Described loudspeaker signal passage is exported described receiver signal, and wherein, described loudspeaker signal passage comprises power amplifier module.
8. according to the described audio frequency signal output of claim 7, it is characterized in that described formation receiver signal is specially: baseband signal is handled the gain parameter that forms described receiver signal and determine described receiver signal;
Described loudspeaker signal passage is exported described receiver signal, is specially: described receiver signal is inputed to described power amplifier module, adjust described receiver signal according to described gain parameter;
To export the audio frequency output module to through the receiver signal of described power amplifier module adjustment.
9. according to the described audio frequency signal output of claim 8, it is characterized in that, describedly will export the audio frequency output module to, be specially through the receiver signal of described power amplifier module adjustment:
To make an uproar the end of by through the receiver signal of described power amplifier module adjustment and export the audio frequency output module to after the debugging.
10. according to the described audio frequency signal output of claim 9, it is characterized in that: makes an uproar to debug and is undertaken by between described loudspeaker signal passage and described audio frequency output module resistance being set in the described end.
11. according to the described audio frequency signal output of claim 7, it is characterized in that: described power amplifier module is the digital power amplifier module.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010286267.3A CN101945146B (en) | 2010-09-19 | 2010-09-19 | Terminal and audio signal output method |
| BR112013007044A BR112013007044A2 (en) | 2010-09-19 | 2011-09-19 | terminal and method for outputting audio signals |
| PCT/CN2011/079796 WO2012034538A1 (en) | 2010-09-19 | 2011-09-19 | Terminal and method for outputting audio signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010286267.3A CN101945146B (en) | 2010-09-19 | 2010-09-19 | Terminal and audio signal output method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101945146A true CN101945146A (en) | 2011-01-12 |
| CN101945146B CN101945146B (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010286267.3A Active CN101945146B (en) | 2010-09-19 | 2010-09-19 | Terminal and audio signal output method |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101945146B (en) |
| BR (1) | BR112013007044A2 (en) |
| WO (1) | WO2012034538A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012034538A1 (en) * | 2010-09-19 | 2012-03-22 | 华为终端有限公司 | Terminal and method for outputting audio signals |
| CN103259903A (en) * | 2013-04-15 | 2013-08-21 | 瑞声科技（南京）有限公司 | Multifunctional sound generating system, sound generating method and communication terminal with system |
| CN104581515A (en) * | 2013-10-15 | 2015-04-29 | 联想(北京)有限公司 | Audio playing device and method as well as mobile terminal |
| CN106502375A (en) * | 2015-09-06 | 2017-03-15 | 中兴通讯股份有限公司 | A kind of method and apparatus for realizing audio frequency parameter self-adaptative adjustment |
| CN106954137A (en) * | 2017-01-04 | 2017-07-14 | 上海傅硅电子科技有限公司 | A kind of double mode drive device for loudspeaker |
| CN108769311A (en) * | 2018-05-29 | 2018-11-06 | 维沃移动通信有限公司 | A kind of method for controlling mobile terminal and mobile terminal |
| CN111225315A (en) * | 2020-02-27 | 2020-06-02 | 维沃移动通信有限公司 | Audio playing device, audio playing method and electronic equipment |
| CN112653965A (en) * | 2020-12-17 | 2021-04-13 | 维沃移动通信有限公司 | Audio playing control circuit and method and device thereof, electronic equipment and storage medium |
| WO2024065945A1 (en) * | 2022-09-27 | 2024-04-04 | 瑞声科技（南京）有限公司 | Sound channel determination method and apparatus, storage medium, and computer device |
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| CN101945146B (en) * | 2010-09-19 | 2014-12-03 | 华为终端有限公司 | Terminal and audio signal output method |
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- 2010-09-19 CN CN201010286267.3A patent/CN101945146B/en active Active
-
2011
- 2011-09-19 BR BR112013007044A patent/BR112013007044A2/en not_active Application Discontinuation
- 2011-09-19 WO PCT/CN2011/079796 patent/WO2012034538A1/en active Application Filing
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| JP2009284072A (en) * | 2008-05-20 | 2009-12-03 | Yamaha Corp | Noise canceling circuit and headphone |
| CN201307873Y (en) * | 2008-11-12 | 2009-09-09 | 宇龙计算机通信科技(深圳)有限公司 | Mobile terminal |
| CN201328172Y (en) * | 2008-12-09 | 2009-10-14 | 宇龙计算机通信科技(深圳)有限公司 | Audio play device and terminal |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012034538A1 (en) * | 2010-09-19 | 2012-03-22 | 华为终端有限公司 | Terminal and method for outputting audio signals |
| CN103259903A (en) * | 2013-04-15 | 2013-08-21 | 瑞声科技（南京）有限公司 | Multifunctional sound generating system, sound generating method and communication terminal with system |
| CN104581515A (en) * | 2013-10-15 | 2015-04-29 | 联想(北京)有限公司 | Audio playing device and method as well as mobile terminal |
| CN104581515B (en) * | 2013-10-15 | 2018-12-18 | 联想(北京)有限公司 | A kind of audio playing apparatus, method and mobile terminal |
| CN106502375A (en) * | 2015-09-06 | 2017-03-15 | 中兴通讯股份有限公司 | A kind of method and apparatus for realizing audio frequency parameter self-adaptative adjustment |
| CN106954137A (en) * | 2017-01-04 | 2017-07-14 | 上海傅硅电子科技有限公司 | A kind of double mode drive device for loudspeaker |
| CN108769311A (en) * | 2018-05-29 | 2018-11-06 | 维沃移动通信有限公司 | A kind of method for controlling mobile terminal and mobile terminal |
| CN111225315A (en) * | 2020-02-27 | 2020-06-02 | 维沃移动通信有限公司 | Audio playing device, audio playing method and electronic equipment |
| CN112653965A (en) * | 2020-12-17 | 2021-04-13 | 维沃移动通信有限公司 | Audio playing control circuit and method and device thereof, electronic equipment and storage medium |
| CN112653965B (en) * | 2020-12-17 | 2022-05-24 | 维沃移动通信有限公司 | Audio playing control circuit and method and device thereof, electronic equipment and storage medium |
| WO2024065945A1 (en) * | 2022-09-27 | 2024-04-04 | 瑞声科技（南京）有限公司 | Sound channel determination method and apparatus, storage medium, and computer device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101945146B (en) | 2014-12-03 |
| WO2012034538A1 (en) | 2012-03-22 |
| BR112013007044A2 (en) | 2016-06-14 |
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